Multiple serious vulnerabilities have been found in Microsoft Internet Explorer and Microsoft Edge. Malicious users can exploit these vulnerabilities to execute arbitrary code, spoof user interface or obtain sensitive information.

Below is a complete list of vulnerabilities

1. An improper memory objects handling can be exploited remotely via a specially designed content to execute arbitrary code or obtain sensitive information;
2. An improper RegEx handling at XSS filter can be exploited by logged in attacker via a specially designed application to obtain sensitive information;
3. An improper memory objects handling at scripting engines can be exploited remotely via a specially designed content to execute arbitrary code;
4. An improper HTTP content parse can be exploited remotely via a specially designed content to spoof user interface.

Microsoft Edge
Microsoft Internet Explorer versions 9 through 11

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

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